What happens is the enzyme 3b-hydroxysteroid dehydrogenase changes the -ol (hydroxyl) at the 3 position in Turinabol LV to a -one (ketone). So at the end of the nomenclature of Turinabol LV you have -3b,17b-diol (di-ol means "2 hydroxyls"). Once 3bHSD interacts, you have -3-one-17b-ol.

4-chloro-17a-methyl-androst-1,4-diene-3b,17b-diol
to
4-chloro-17a-methyl-androst-1,4-diene-3-one-17b-ol